Steyr M95 bore diameter.

[bob q]

Your Gew-88 bore information is not correct . Your posting of that is the exact example of what I was talking about . The German military NEVER used a .307 -.318 bore . That is a civilian bore size . The Gew-88 bores sizes were as follows : 1889- .3138 - .3208 [ rifling was too shallow , wear was a problem ] ,,,,,,, 1890- .3108 - .3208 [ rifling made deeper by making bore hole smaller ] ,,,,, 1895 1/2 .3108 - .3238 [ the final military bore size used through WWII ] . I own over 50 rifles of all makers and years and they all match that , as do the original German military testing documents .

Information

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[Kyle M.]

Your Gew-88 bore information is not correct . Your posting of that is the exact example of what I was talking about . The German military NEVER used a .307 -.318 bore . That is a civilian bore size . The Gew-88 bores sizes were as follows : 1889- .3138 - .3208 [ rifling was too shallow , wear was a problem ] ,,,,,,, 1890- .3108 - .3208 [ rifling made deeper by making bore hole smaller ] ,,,,, 1895 1/2 .3108 - .3238 [ the final military bore size used through WWII ] . I own over 50 rifles of all makers and years and they all match that , as do the original German military testing documents .

Before this turns into a shouting match and goes completely off course I'm just gonna say I got the answer i was looking for,and I'll likely be sticking to my .329 cast bullets. They shoot as well as I can do and that's good enough for me. I did shoot one box of the PPU stuff and will say it's not the most comfortable shooting round in a light little carbine.

[Patrick Chadwick]

Your Gew-88 bore information is not correct . Your posting of that is the exact example of what I was talking about ...

Thank you bob q! You are correct.
The information I gave is the official standard dimensions from the "Masstafeln" for 8x57I, but I should not have written "Gew. 88". It all just confirms that measurement beats theory!